*{
  margin: 0;
  padding: 0;
}
li{
  list-style: none;
}
a{
  text-decoration: none;
}
img{
  display: block;
}
em,i{
  font-style: normal;
}
html,body{
  width: 100%;
  height: 100%;
}
input{
  outline: none;
  padding-left: 5px;
}


/* banner start */
.banner{
  width: 100%;
  height: 500px;
  position: relative;
  margin: 0 auto;
  overflow: hidden;
}
.banner .imgbox{
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0px;
  top: 0;
}
.banner .imgbox img{
  height: 100%;
  width: 100%;
  float: left;
}
.banner .btns input{
  width: 50px;
  height: 50px;
  color: #444;
  font-size: 40px;
  text-align: center;
  line-height: 45px;
  border: 0;
  background: rgba(255, 255, 255, 0.5);
  position: absolute;
  top: 40%;
}
.banner .btns .left{
  left: 80px;
}
.banner .btns .right{
  right: 80px;
}


/* main start */
main{
  width: 1170px;
  margin: 10px auto;
}
main .knowledge{
  width: 1170px;
  text-align: center;
  margin-top: 30px;
}
main .knowledge h2{
  margin-top: 30px;
  font-size: 36px;
}
main .knowledge .title{
  font-weight: bolder;
  font-size: 24px;
  color: #ff9a3b;
  margin: 20px 0;
}
main .knowledge>p{
  font-size: 18px;
  color: #a1a1a1;
}
main .knowledge>p:last-of-type{
  margin-bottom: 20px;
}
main .knowledge .pic{
  width: 1170px;
  height: 400px;
}
main .knowledge .pic img{
  width: 50%;
  float: left;
}
main .knowledge .pic .right{
  width: 45%;
  height: 400px;
  float: left;
  /* overflow: hidden; */
}
main .knowledge .pic .right .top{
  height: 195px;
  background-color: #ffd3aa;
  border-bottom: 1px solid #ff9a3b;
  /* box-sizing: border-box; */
}
main .knowledge .pic .right .top:nth-child(2){
  height: 194px;
  display: flex;
  flex-direction: row-reverse;
  background-color: #ffd3aa;
  border-bottom: 0;
  border-bottom: 1px solid #ff9a3b;
}
main .knowledge .pic .right .top:nth-child(2) .jinmao{
  height: 194px;
  background-color: #ffd3aa;
  border-bottom: 0;
  box-sizing: border-box;
}
main .knowledge .pic .right .top:nth-child(2) .txt span{
  font-size: 12px;
}
main .knowledge .pic .right .top .jinmao{ 
  width: 200px;
  height: 195px;
  overflow: hidden;
  float: left;
} 
main .knowledge .pic .right .top .jinmao img{ 
  width: 100%;
} 
main .knowledge .pic .right .top .txt{
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  padding:0 5px;
}
main .knowledge .pic .right .top .txt h5{
  font-size: 18px;
  margin: 15px 0;
  cursor: pointer;
}
main .knowledge .pic .right .top .txt .line{
  width: 150px;
  height: 5px;
  float: right;
  display: block;
  background: #ff9a3b;
  margin-top: 2px ;
}
main .knowledge .pic .right .top .txt span{
  font-size: 14px;
  text-align: left;
  margin-top: 20px;
  width: 320px;
  padding-right: 5px;
}
main .knowledge .pic .right .top .txt a{
  font-size: 16px;
  margin: 20px;
  color: #ff9a3b;
}


main .project{
  width: 1170px;
  text-align: center;
  margin: 30px 0 60px 0;
}
main .project h2{
  margin-top: 30px;
  font-size: 36px;
}
main .project .title{
  font-weight: bolder;
  font-size: 24px;
  color: #ff9a3b;
  margin: 20px 0;
}
main .project>p{
  font-size: 18px;
  color: #a1a1a1;
}
main .project>p:last-of-type{
  margin-bottom: 20px;
}
main .project .pet_pic{
  width: 1170px;
  height: 180px;
  /* border: 1px solid red; */
  display: flex;
  justify-content: space-around;
  align-items: center;
}
main .project .pet_pic a{
  width: 150px;
  height: 150px;
  border: 5px solid #ff9a3b;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 5px;
}
main .project .pet_pic a img{
  height: 120px;
}
main .project .pet_pic a img:nth-last-child(6){
  height: 100px;
}


main .benefit{
  width: 1170px;
  margin: 30px 0;
  text-align: center;

}
main .benefit h2{
  margin-top: 30px;
  font-size: 36px;
}
main .benefit .title{
  font-weight: bolder;
  font-size: 24px;
  color: #ff9a3b;
  margin: 20px 0;
}
main .benefit>p{
  font-size: 18px;
  color: #a1a1a1;
}
main .benefit>p:last-of-type{
  margin-bottom: 20px;
}
main .benefit .pet_pic{
  width: 1170px;
  height: 180px;
  /* border: 1px solid red; */
  display: flex;
  justify-content: space-around;
  align-items: center;
}
main .benefit .pet_pic a{
  width: 150px;
  height: 150px;
  border: 5px solid #ff9a3b;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 5px;
}
main .benefit .tt{
  width: 1170px;
  display: flex;
  justify-content: space-around;
}
main .benefit .tt .content{
  width: 250px;
  border: 2px solid #ffd3aa;
  padding: 40px 20px;
  box-sizing: border-box;
  text-align: center;
}
main .benefit .tt .content .iconfont{
  font-size: 50px;
  color: #ff9a3b;
  width: 80px;
  height: 80px;
  background: rgb(34, 34, 34);
  border-radius: 50%;
  line-height: 80px;
  margin: 30px auto;
}
main .benefit .tt .content p{
  font-size: 20px;
  color: rgb(34, 34, 34);
}
main .benefit .tt .content span{
  width: 15px;
  height: 5px;
  background: rgb(34, 34, 34);
  display: block;
  margin: 20px auto;
}
main .benefit .tt .content p:last-of-type{
  font-size: 12px;
  color: rgb(155, 155, 155);
}
